How much of that 100GB is actually optimized usage? I suspect that a hard cap on the size of the game would lead to a better quality product. The size inflation of games has literally gone insane. I was looking at my Steam library and Tekken 7 was taking up close to 100GB of space which makes absolutely no sense, because it has the same fundamental gameplay as Tekken Tag 1 which was released on a 700MB CD ROM for the PS2's launch.

Tekken 7 does not need to be 100GB.

And with improvements in procedural rendering, textures and environments should become more compact than pre-rendered (and games should load faster as well.)